i wont say A550 is for beginner, but when a beginner buys it, they wont need any upgrade for at least 3-4 years. when u buy A230, u probably wanted to upgrade in 6 month time. for A200/300 (been almost a year), time to upgrade or stay.

Mikeshashimi: Yes it is a prime lens, and is one of the more famous and desired Zeiss lenses.

shootkk: It might be between your viewfinder and pentaprism. Lay your A850 on its back, lens mount facing up. Use a fingernail (screwdriver might scratch mirror if overshot) to lightly unlatch the viewfinder 'holder'. The holder and viewfinder screen will fold out, onto the mirror. Blow towards the pentaprism and on the back of the viewfinder.

To close it back, just tilt the camera so the viewfinder and 'holder' go back in place, then use your finger to lock it in.